Patent GB-190101080-A (GB)
Title: Improvements in or relating to Stamping Machinery.
Filed: 1901-01-16
Granted: 1902-01-16
Abstract: 1080. Pierpont, F. H., and Lanston Monotype Corporation. Jan. 16. Stamping. - Relates to stamping- machines generally, but particularly to machines for producing matrices, such as those used in monotype casting and setting machines, from metal blanks with a conical hole at one end. The stamping operation reduces the blank to definite dimensions, accurately forms the character and locating - hole, and renders the metal denser. The machine has a reciprocating diehead B<1> passing through a standard A<5>. The operation of the head is controlled by a tripping lever A<2> held by a catch A<3>, the raising of the lever allowing the stamp to make one complete operation. The blanks X are contained in a race F, and are pushed forwards against a spring stop F<8> by a slide F<2> and weighted cord F'. Two arms E<1>, E<2> on a pin D carry respectively a blank carrier or chamber E<4> and a matrix carrier or chamber E<17>, each of which has an open side through which the blank or matrix can be inserted, being frictionnally held by spring pins. In starting the machine, the arms are rocked from the position shown by a handle H to bring the blank-carrier opposite the feed-race F and the matrix-carrier over the die 0 into which the reciprocating punch B enters. This movement pushes back the stop F<8>, allowing the first blank to be fed to the blank-carrier. The arms are then returned by a spring D', and a spring- raised handle E<10> on the arm E' is depressed by the operator. This causes a vertical rack E<3> to push the blank into the die C, the bottom of which is formed by an ejector punch C<5>. Further, a pin E<16> on the handle operates a rock-shaft K carrying the catch A<3>, and starts the machine. The blank-carrier is now moved automatically to the right, so that both carriers are clear of the die-head. This automatic movement is effected bv a segment D<1> on the pin D engaging a segment D<6> through a wheel D<5>. The segment D<6> is operated by a rod D<3> attached to the head and having a cam-groove with a spring shuttle D<15>, in which groove a pin D<14> on the segment engages. The descent of the head compresses the blank to a justined matrix between the punches in the die C. When the bead has risen sufficiently the pin D is further rocked to bring the matrix-carrier over the die, the blank-carrier receiving another blank. The ascent of the rod D<3> causes pivoted hooks C<8> on it to engage an arm C<6> projecting from a rod C' carrying the punch C<5>, and thus raise the punch to eject the matrix into the matrix-carrier. The hooks are then automatically tripped, and the punch and rod returned by a spring C<13>. The further ascent of the head brings the matrixcarrier opposite a delivery race G, having spring slides G<5>, G<7> to remove the matrix from the carrier when the latter is again brought over the die in the next operation. This movement causes a cam D' on the pin D to push in the slide G<5>, thus pushing the matrix into the race. The punch B is held in place by a set-screw, and is ejected by a spring-actuated rod when the screw is slackened. To insert the punch, a spring pin E<13>, which normally limits the upward movement of the handle E<10> by engaging a pin E", is withdrawn so that the rack E<3> may be further depressed to allow the punch to be placed over it, and then pushed into position by depressing the handle. If the matrix has no locating-hole, the lower punch has a flat top.